Method of producing phosphorus potassium compound fertilizer using straw ash of biomass energy straw electric generation plant

A technology of compound fertilizer and straw ash, applied in the application, organic fertilizer, fertilization device and other directions, can solve the problems of poor element availability, high fertilizer salinity, increase the amount of raw materials, etc., and achieve low cost, high nutrient availability, and pollution reduction. Effect

Inactive Publication Date: 2008-04-02
INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are that the fertilizer has high salinity, strong alkalinity, poor element availability, and slow fertilizer effect, especially not suitable for use in alkaline soil
Although the above two methods of using straw ash to produce fertilizer use straw ash as the main raw material, they both need to add a large amount of auxiliary materials, which invisibly increases the amount of raw materials. It is necessary to build a large-scale fertilizer plant to digest and dispose of the power plant continuously. The production of straw ash requires more investment in capital, manpower and material resources to ensure the waste treatment of the power plant, so as to realize the virtuous circle of the main power generation industry of the power plant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1. Utilize wheat straw ash to produce phosphorus and potassium compound fertilizer, wherein the nutrient content of wheat straw ash is P 2 o 5 6.4,K 2 O13.8.

[0058] Components of phosphorus and potassium compound fertilizer: 84.0 parts of straw ash, 10.5 parts of binder, and 5.5 parts of acidity regulator, wherein the binder is a combination of magnesium oxide powder, gypsum powder and acrylic resin in a weight ratio of 3.5:1.2:0.8. The acidity regulator is composed of phosphoric acid and sulfuric acid in a weight ratio of 4:1.

[0059] Take 84.0 parts of wheat straw ash as powdery raw material and 10.5 parts of binder and add them to the running drum in turn, then take 5.5 parts of acidity regulator and mix them with appropriate amount of water, and spray them on the reaction materials. Turn the drum to granulate for 4 to 8 minutes. When the reaction raw materials form fertilizer granules with a relatively uniform size, the semi-finished fertilizer ente...

Embodiment 2

[0062] Embodiment 2. utilize cotton stalk ash to produce phosphorus and potassium compound fertilizer, wherein the nutrient content of cotton stalk ash is P 2 o 5 1.9,K 2 O11.2.

[0063] Components of phosphorus and potassium compound fertilizer: 80.5 parts of cotton straw ash, 12.0 parts of binder, and 7.5 parts of acidity regulator, wherein the binder is a combination of magnesium oxide powder, gypsum powder and acrylic resin in a weight ratio of 4:0.6:0.5. The acidity regulator is composed of phosphoric acid and citric acid in a weight ratio of 5:2.5.

[0064] As described in Example 1, the different raw materials are as follows, all in parts by weight: get 80.5 parts of powdery raw material cotton stalk ash, 12.0 parts of binder are added in the rotating drum successively, then take 7.5 parts of acidity regulator and Appropriate amount of water is mixed and sprayed on the reaction material.

Embodiment 3

[0065] Embodiment 3. utilize straw ash to produce phosphorus and potassium compound fertilizer, wherein the nutrient content of straw ash is P 2 o 5 0.6,K 2 O8.1.

[0066] Components of phosphorus and potassium compound fertilizer: 89.5 parts of straw ash, 7.0 parts of binder, and 3.5 parts of acidity regulator, wherein the binder is a combination of magnesium oxide powder, gypsum powder and acrylic resin in a weight ratio of 3:0.8:1.2. The acidity regulator is a combination of phosphoric acid, sulfuric acid and citric acid in a weight ratio of 4:0.8:1.

[0067] As described in Example 1, the different raw materials are as follows, all in parts by weight: get 89.5 parts of powdered raw material rice straw ash, 7.0 parts of binder are added to the rotating drum successively, and then 3.5 parts of acidity regulator are mixed with Appropriate amount of water is mixed and sprayed on the reaction material.

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Abstract

The process of producing composite phosphate and potash fertilizer with the stalk ash from stalk power plant belongs to the field of environment protecting and fertilizer producing technology. The composite phosphate and potash fertilizer consists of stalk ash 80-94.8 weight portions, acidity regulator 1.2-10 weight portions, and adhesive 4-12 weight portions. The acidity regulator is two or three of phosphoric acid, sulfuric acid and citric acid; and the adhesive is the composition of magnesia powder, gypsum powder and acrylic resin in the weight ratio of 3-4 to 0.5-2 to 0.1-1.5. The preparation process includes the steps of crushing material, drum palletizing, stoving and packing. The present invention has low fertilizer producing cost and high effective component content in fertilizer, and the fertilizer is suitable for different kinds of soil and different kinds of crops.

Description

technical field [0001] The invention relates to a method for producing phosphorus and potassium compound fertilizer by using straw ash produced in the power generation process of a straw power plant, and belongs to the technical field of environment-friendly agricultural fertilizers. Background technique [0002] my country is facing enormous energy pressure. Developing and producing various renewable energy sources to replace fossil fuels such as coal, oil and natural gas is an effective way for the world to solve energy shortages in the future. The research of scientists and the accumulated experience of biomass power plants have proved that crop straw power generation is the best choice for biomass power generation. Straw resource is a kind of green renewable energy with the largest scale of development and utilization in new energy. According to the statistics of relevant departments, among the crop straws used as energy sources in my country, 145 million tons are used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F11/02C05G1/00
Inventor 李彦张英鹏张荣全高弼模董晓霞徐长英
Owner INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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